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無(wú)桿氣缸和普通氣缸的的工作原理一樣只是外部連接、密封形式不同
缸兩邊都是空心的活塞杄內(nèi)的永磁鐵帶動(dòng)活塞桿外的另一個(gè)磁體(運(yùn)動(dòng)部件)我想說(shuō)的是
它對(duì)清潔度要求蠻高的我們公司的磁偶的無(wú)桿氣缸經(jīng)常要拆下來(lái)汽油清洗可能與它的工作環(huán)
境有關(guān)吧。
桿氣缸里有活塞,而沒(méi)有活塞桿的,活塞裝置在導(dǎo)軌里,外部負(fù)載給活塞相連,作動(dòng)靠
磁偶式的運(yùn)動(dòng)是利用空心活塞杄內(nèi)的永磁鐵帶動(dòng)活塞杄外的另一個(gè)磁鐵運(yùn)動(dòng)來(lái)實(shí)現(xiàn)的,因其在
速度快,負(fù)載高時(shí)內(nèi)外磁環(huán)易脫開(kāi),故現(xiàn)在比較少用了。其負(fù)載質(zhì)量的大小需查找其質(zhì)量與速
度的特性曲線。現(xiàn)在機(jī)械式的用的比較多。
無(wú)桿氣缸的分類(lèi)
無(wú)桿氣缸分為磁偶無(wú)桿氣缸和機(jī)械接觸式無(wú)桿氣缸。無(wú)桿氣缸是指利用活塞直接或方式連接外
界執(zhí)行的機(jī)械,并使其跟隨活塞實(shí)現(xiàn)往復(fù)運(yùn)動(dòng)的氣缸,這種氣缸的zui大優(yōu)點(diǎn)是節(jié)省安裝空間
(1)磁偶無(wú)桿氣缸
活塞通過(guò)磁力帶動(dòng)缸體外部的移動(dòng)體做同步移動(dòng)。它的工作原理:在活塞上安裝一組高強(qiáng)
磁性的永久磁環(huán),磁力緯通過(guò)薄壁缸筒與套在外面的另一組磁環(huán)作用,由于兩組磁環(huán)磁性相
反,具有很強(qiáng)的吸力。當(dāng)活塞在缸筒內(nèi)被氣壓推動(dòng)時(shí),則在磁力作用下,帶動(dòng)缸筒外的磁環(huán)套
起移動(dòng)。氣缸活塞的推力必須與磁環(huán)的吸力相適應(yīng)。
(2)機(jī)械接觸式無(wú)桿氣缸
在氣缸缸管軸向開(kāi)有一條槽,活塞與尚志在槽上部移動(dòng)。為了防止泄漏及防塵需要,在開(kāi)
口部采用不銹鋼封帶和防塵不銹鋼帶固定在兩端缸蓋上,活塞架穿過(guò)槽地,把活塞與尚志連成
體?；钊c尚志連接在一起,帶動(dòng)固定在尚志上的執(zhí)行機(jī)構(gòu)實(shí)現(xiàn)往復(fù)運(yùn)動(dòng),
桿氣缸特點(diǎn)
1、與普通氣缸相比,在同樣行程下可縮小1/2安裝裝置
不需設(shè)置防轉(zhuǎn)機(jī)械
適用于缸徑10-80mm,zui大行程可達(dá)415
速度10m/s
桿氣缸缺點(diǎn)
1、密封性能差,容易產(chǎn)生外漏。在使用三位閥時(shí)必須選用中壓式
受負(fù)載力小,為了增加負(fù)載能力,必須增加導(dǎo)向機(jī)械。無(wú)桿氣缸實(shí)例無(wú)桿氣缸的品牌
現(xiàn)在市場(chǎng)上流通的無(wú)桿氣缸主要有ORGA無(wú)桿氣缸、諾冠無(wú)桿氣缸、 FESTO無(wú)桿氣缸、SMC
無(wú)桿氣缸、小金井等,這幾個(gè)品牌還是不錯(cuò)的。其中 ORIGA的產(chǎn)品線比較少,是專(zhuān)業(yè)做無(wú)桿
氣缸,也是無(wú)桿氣缸的發(fā)明者,擁有金屬密封的專(zhuān)利技術(shù),但整體上的知名度有時(shí)比不上其他
幾個(gè)。

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